the earths atmosphere
The Earth's atmosphere is a layer of gases that surrounds the planet. It is held in place by the Earth's gravity and is composed mainly of nitrogen (78%) and oxygen (21%). The remaining 1% is made up of trace gases such as carbon dioxide, methane, hydrogen, and helium.
The atmosphere plays a crucial role in supporting life on Earth. It protects the planet from harmful solar radiation, regulates temperature, and provides the air we breathe. It also helps distribute heat around the globe through various atmospheric processes such as convection and wind patterns.
The atmosphere is divided into five main layers based on temperature changes: the troposphere, stratosphere, mesosphere, thermosphere, and exosphere. Each layer has different characteristics and plays a unique role in the overall functioning of the atmosphere.
Human activities, such as the burning of fossil fuels and deforestation, have resulted in an increase in greenhouse gas emissions, particularly carbon dioxide. This has led to the phenomenon of global warming and climate change, which is causing significant impacts on the Earth's atmosphere and ecosystems.
Overall, the Earth's atmosphere is a delicate and intricate system that is crucial for the preservation of life on our planet.